[wp-polyglots] TinyMCE translation

[Pandem]

I still can't find a proper way to get TinyMCE translated into Spanish. 
I've added all the es.js into the /lang directories and them modified 
tiny_mce_gzip.php, changing all occurrences of en.js to es.js, but that 
doesn't seem to be the best method, because we'll have to make a whole 
Spanish distribution in order to get the whole interface translated. Is 
there another way to do this?